Well that didn't last long
I went to play and trashed the tranny-now we know that a used Polaris 325 gearbox can't handle 80+ hp very long.Possibly a new gearbox would go the distance. This gearbox was WELL used when I got it, then is was coupled to a 400cc motor for awhile and then this motor giving it a serious workout. I'll give some thought to a repair or modification I can afford to resolve the issue.